brisker



3 Sheets-Sheet 1.

(No Model.)

G. MACHINE FOR ROLLING METAL PLATES AND BARS. No. 437,970.

BRISKER.

Patented Oct. 7, 1890.

OOOOGOOO OOOOOOOC GO I v WM/I/IIIIIII/I/IIIIIIJ/IIIMI @OQQOGO (No Model.) 3 Sheets-Sheet 2.

G. BRISKER. MACHINE POE ROLLING METAL PLATES AND BARS.

No. 437,970' Patented Oct. '7, 1890.

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3 Sheets-Sheet 3.

(No Model.)

G- BRISKER I MACHINE FOR ROLLING METAL PLATES AND BARS.

Patented Oct. '7, 1890.

Znws s 633 wf M A UNITED STATES PATENT OFFICE.

GUSTAV BRISKER, OF KGNIGSHUTTE, GERMANY.

MACHINE FOR ROLLINGMETAL PLATES AND BARS.

SPECIFICATION forming part of Letters Patent No. 437,970, dated October 7,1890.

Application filed October 23, 1889. Serial No. 327,881- (No model.)

To aZZ whom it may concern:

Beitknown that I, GUSTAVBRISKER, a subect of the Emperor of Austria-Hungary, and a resident of Konigshiitte, in the Empire of Germany, have invented certain new and useful Improvements in and Relating to the R011- ing of Metal Bars, Plates, and the Like and to Apparatus Therefor, of which the following is a specification.

The improvements forming the subject of this invention consist in so arranging tworoller or three-roller mills that as the metal emerges from the pair of rolls whose action it is undergoing it is bent by one or more guiderolls capable of a rising-and-falling motion in such a manner that, passing over the upper roll in two-roller mills orbetween the middle and upper roll in three-roller mills the metal is brought round again to the front side of the mill. As soon as the whole piece is thus delivered at the front it is caused to pass again through a pair of rollsi. 6., between the upper and lower or middle and lower rolls, as the case may be. The rising and falling guide-rolls may be arranged in a variety of ways, provided always that the arrangement is such that after each passage between the rolls the metal piece is either bent and carried back to the front or may issue in a straight shape behind the rolls. \Vhen a table or a platform is arranged at the back of the rolls, capable of being raised, as in mills for sheet-iron and iron of all sections, it can, if desired, (and without any special preparation,) be made use of for raising and carrying back the metal each time the same emerges from between a pair of rollers. This arrangement, applicable to each of the different types of mills hereinafter described, enables the metal to be subjected to the bending operation after it emerges from one pair of rolls, or to be left straight, at will, no matter at what rate of speed the rolling is carried on. In the case of three-high rolls the tail or end of the rolled and bent metal piece is enabled by the peculiar construction and operation of the rising and falling guide-rolls to freely increase in width toward the back. The invention is illustrated in the accompanying drawings, in which- Figure 1 represents a sectional side elevation of a two-roller mill. Fig. 2 is a similar View of a threeroller mill. Figs. 3, 4:, 5, and 6 are sectional side views of two-roller or threeroller mills, showing modifications of the guide-rollers. Fig. 3 is a detail view.

The arrangement of the guide-rolls is susceptible of the following variations:

First. A roller 20 may be raised or lowered by a cylinder 0, as in the construction illus' trated in Fig. 1. Before the metal piece leaves the rolls at the back the guide-rollw is slightly raised, and thereby imparts to the emerging metal an upward bend, and as the metal farther emerges the roll to continues to ascend and to bend the same so as to cause it to pass between the upper working-roll and what may be called a dragging-roller on, or, in the case of a three-roll mill, between the middle and upper roll. The plate r prevents the metal from rising too high. By means of a stripper a and the straightening-roll w the metal piece as it emerges on the front side is straightened again. XVhen it has passed to the front side, as explained above, the roller w sinks to the level of the table again.

Second. The guide-roller u) may also, as shown in Fig. 5, be connected with the lift ing-table and rise and fall in conjunction with the latter.

Third. Two or more risingaud falling guiderollers w and w may be provided, instead of one, as shown in Fig. 2, and adapted to move up and down either simultaneously or independently of each other.

Fourth. Rollers w w may also, as illustrated in Fig. 3, be connected by a curved link 1). The roll 20 in this case is loose on its shaft, which is fitted with eccentric fixed pivots 2, Fig. Before the metalpiece emerges from the pair of rolls the link I) is turned on the pivots .2: and raised by the cylinder 0, whereby, owing to the eccentric situation of the said pivots, the roll 10 is also slightlyraised. The metal is then bentin a mannerboth simple and effective and conducted to the upper TOO V out from between the working-rolls at the 'larly to those shown in Fig. 3

back in a straightshape, the table is allowed to sink, as indicated by dotted lines, just before the metal emerges.

Sixth. One of the guide-rolls w may be arranged behind the strippers of the lower working-roller, Fig. 4, and turn loosely on a shaft, the pivots of which are fixed eccentric simi- Alink 1), carrying another guide-roller w, is hinged to the plate 4' and caused to rise and fall by a cylinder c. Before the metal leaves the rolls the roll 10 is caused by a suitable lever to turn through an angle of one hundred and eighty degrees, and, owing to the eccentric position of its shaft, it is thereby slightly raised, while at the same time the link I), with the roll w, is allowed to descend, so that here again the passage of the metal from the back to the front of the machine takes place in an easy and efficient manner. In case this arrangement is applied to a three-roll mill, the roll w afterthe passage of the metal is moved back to its original position, while the roll w rises with the link I), so that nothing prevents the tail of the metal piece carried to the opposite side from increasing in width toward the back.

.By means of the above-described modifications of my improved guiding arrangement of rolling-mills the following advantages are obtained in the manufacture of sheet-iron, iron of all sections, bars, billets, and the like:

First. In the devices hitherto used for conveying the rolled metal from one end of the machine to the other (the application of which was practically confined to wire and thin iron bands, these machines being unfit for other purposes) the same metal piece is only carried over once. In myimproved mill, on the contrary, all iron pieces capaple of being worked in a rolling-mill, irrespective of width or thickness, including sheet-iron and iron of all sections, may be in the same Way guided backward and forward, and the metal is after each passage between the rolls caused to go through the same guiding contrivance. In the case of grooved rolls, the metal may by the same means be shifted from one patternroll onto the other. Besides, each time the metal emerges from a pair of rolls it may at.

will be made to go through the bending and guiding mechanism described or allowed to leave the working-rolls at the back, which choice is not allowable in any of the systems hitherto known.

Second. In rolling iron of all sections and sheet-iron with the assistance of .the bending and guiding devicethe metal being alternately bent and straightened is freed from any slag or scales that may adhere thereto. Besides, each time it passes between the rollers it is turned over, so that the upper surface at the time is not the same which was turned upward during its preceding passage between the rolls. By this means either side of the metal sheet or band may in turn be scraped and freed from any impurities, which enables abetter qualityof sheet iron to be turned out and diminishes the waste.

Third. In rolling flat bars or bands by means of grooved rolls the necessity of turning round the metal piece at an angle of one hundred and eighty degrees every time it leaves the pair of rolls, to avoid the formationof burr, is obviated.

Fourth. Owing to my guiding device, a diferent end of the metal piece is first inserted between the rolls each time, even in double or two-roller mills, so that it is uniformly rolled iii-either direction exactly inthe same way as if the mill were a three-roll one. 7

Fifth. The arrangement herein described enables the production to be increased with a considerable reduction in the cost of labor.

I claim as my invention 1. In a rolling-mill, the combination of the working-rolls with a movable return-guide, devices, substantially as described, for moving it during the rolling either into position to cause the metal to return to the front of the rolls to be rcrolled or into position to permit the metal to pass out straight, all substantially as described.

2. In a rolling-mill, the combination of the working-rolls with a movable return-guide, and a motive-power cylinder to move the guide into position during the rolling, Whereby the metal may be caused to return to the front of the rolls to be rerolled or into position to permit the metal'to pass out straight, all substantially as described.

3. In a rolling-mill, the combination of the working-rolls with a movable return-guide forming part of the table or platform when at rest, and means for moving the guide into position to cause the metal to return to the front of the rolls to be rerolled or into position to permit the metal to pass out straight, all substantially as described.

4. In a rolling-mill, the combination of the working-rolls with a movable return-guide connected to the table or platform, and means for moving the guide into position to cause the metal to return to the front of the rolls and to be rerolled or into position to permit the metal to pass out straight, all substantially as described.

In testimonywhereof I have afiixed my signature in presence of two witnesses.

Witnesses:

E. G. I. MOELLER, T. G. HARDY.

GUSTAV BRISKER. 

